The peripheral nervous system

Question 1

How many cranial nerves are there

Answer 1

12 cranial nerves

Question 2

How many spinal nerves are there

Answer 2

31 pars of spinal nerves

Question 3

cranial nerves are ..

Answer 3

somatic
motor
sensory
or mixed

Question 4

spinal nerves are…

Answer 4

somatic sensory and motor

- mixed

Question 5

where do the spinal nerves come from

Answer 5

• the spinal cord

Question 6

how many cervical spinal nerves are there

Answer 6

8 C1-C8 pairs

Question 7

how many thoracic spinal nerves are there

Answer 7

12 T1-T12 pairs

Question 8

how many lumbar nerves are there

Answer 8

5 L1-L5 pairs

Question 9

how many sacral nerves are there

Answer 9

5 S1-S5 pairs

Question 10

how many coccygeal nerves are there

Answer 10

1 CO1 pairs

Question 11

why are there 8 cervical nerves

Answer 11

this is because C1-7 emerge superior to the vertebrae for which they are named
c8 emerges inferior to c7 vertebrae
- below this each spinal nerve leaves the vertebral column inferior to there numbered vertebrae

Question 12

where do cranial nerves emerge from

Answer 12

the brain and the brainstem

Question 13

label a cross section of the spinal cord

Answer 13

label it

Question 14

what are the 3 plexi

Answer 14

cervical C1-C5
brachial C5-T2
lumbar L1-L4
sacral L4-S4

Question 15

Label the dermatome

Answer 15

DO IT

Question 16

where does the sciatic nerve originate from

Answer 16

L4 - S3

Question 17

where does the sciatic nerve pass down

Answer 17

passes down the posterior leg

Question 18

where does the dermatomes of C5-C8 run down

Answer 18

run down the arm

Question 19

because the dermatomes c5-c8 run down the arm ..

Answer 19

the dermatome C5 is next to T1 dermatome on the front of the chest

Question 20

t2-t12 where does it go for the dermatome

Answer 20

goes rough the thorax and abdomen

Question 21

sacral dermatomes

Answer 21

on buttocks

Question 22

lumbar dermatomes

Answer 22

on front of legs

Question 23

what is the peripheral nervous system made up of

Answer 23

cranial and spinal nerves